Interface Description  R&S XU 4200 
 6.13 6166.5368.02.01 
Entry in column D (direction): O =  Output  I =  Input    B = Bi-directional 
Entry in column T (type):  A = Analog  D = Digital  P = Power
 
Signal description  D  T  Range  Contact  Remarks 
USER_OUT2  O  D  Ri = 220  
CMOS 3.3 V 
X11.14  
USER_IN I D Contact against 
GND = active 
Internal pull-up 10 k 
to 3.3 V, limited to 
max. 6.8 V 
X11.15  If "User Contact Warning" 
is enabled and the input 
USER_IN  (X11.15) is 
"high" (e.g. input open), 
the radio will send a 
USER CONTACT 
WARNING 0430 to the 
remote control system.  
If "User Contact Warning" 
is enabled and the input 
USER_IN (X11.15) is 
"low" (input connected to 
GND), no warning will be 
send to the remote control 
system.  
Note: If "User Contact 
Warning" is disabled, no 
warning will be send to the 
remote control system. 
 
 
Host Interface Port X12\Host Interface Port X12 "Radio".doc
 
 
6.2.12  RS-422 – Host Interface Port X12 (Reserved) 
RS-422 Host interface port (EIA-530) 
DCE configurated – DSUB female (25pins) 
 
Fig. 6.12  RS-422 – Host interface port X12 (reserved). 
 
ATTENTION 
 
Reserved connector. 
Do not connect any signal to connector X12. 
The radio may be damaged if any signal is connected. 
 
 
Communication Data Connector X13\Communication Data Connector X13 "Radio".doc